on 03/03/31 21:52, Robert Nicholson at robert at elastica.com wrote: > Is it an A or B ? I believe you want B and it's also a 1xxx number > sometimes. > I don't know what you mean, Robert. Where do you see this number? On mine, he model number is clearly stated as "M8511". There is a long serial number, and also a part number on the decal/label, but the model number is definitely M8511.